Huron & SNAP Documentation

↓ To change the ISA memory
address of the Huron
↓ To edit the registry settings
INTRODUCTION TO THE HURON
Altering the ISA base memory address of the Huron is a two
stage process, it requires that:
1. The Jumpers on the DSP card and I/O card are set to a new
address.
2. The Huron Windows 2000 Registry settings are altered to
refer to the changed addresses.
• Adjust the jumpers on the DSP card.
JP2 is located on the bottom left hand corner of the DSP card.
The base address can be located on any 0x0200 boundary, but
should be confined to 0xD000-0xDE00 for AT compatible
systems. The most significant 7 bits of the base address are set
by JP2, with the most significant bit (MSB) on the bottom of
the jumper block. When no jumper is installed on a bit position
a logical “1” is set, while an installed jumper denotes a logical
“0”.
Below is a diagram of the jumper setting for the DSP card
default base address of 0xD000. If you have any other cards in
your computer, ensure they do not access the same address
space as the Huron.
Figure 5 — DSP card Jumper 2
• Set the I/O carrier card to the same address as the DSP Card
using JP 1 on the I/O carrier card.
Below is a diagram of the I/O card jumper settings for the
default base address of 0xD000.
Figure 6 — I/O card Jumper 1
After the Huron hardware base address has been changed, the
Huron Windows 2000 Registry settings need to be edited to
match this new base address.
1. From the Windows 2000 Start Menu select Run.
2. At the prompt type Regedit or Regedt32.
3. Browse to the Registry Key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControl
Set\Services\lakekrnl\Parameters
HURON TECHNICAL MANUAL PAGE 32